Adding GUI to a ported Android app

The previous two recipes demonstrate how to port a command-line executable to Android. Needless to say, the biggest disadvantage of such a method is that it cannot be executed on a non-rooted Android device. This recipe discusses how to address the issue by adding a GUI when porting an application to Android.

How to do it...

The following steps describe how to add a simple UI to the ported app:

1. Create an Android application named PortingExecutableAUI with native support. Set the package name as cookbook.chapter9.portingexecutableaui. Refer to the Loading native libraries and registering native methods recipe of Chapter 2, Java Native Interface, if you want more detailed instructions.

2. Follow steps 2 to 8 of the Porting a command line executable to Android with NDK build system recipe of this chapter.

3. Add a mylog.h file under the jni/fusch folder. Add the following lines to the jni/fusch/fusch.c file at the beginning of the main method, then remove the original...